logger: add firmware verification capability

I've added two logger flags for firmware version verification:
-e		- enables checking fw version with default file
-v ver_file	- enables checking fw version with ver_file file

Signed-off-by: Bartosz Kokoszko <bartoszx.kokoszko@linux.intel.com>

README

@@ -65,11 +65,25 @@ Usage sof-logger <option(s)> <file(s)>
 -p			Get traces from stdin, instead of the default 
 			"/sys/kernel/debug/sof/etrace"
 -c			Set timestamp clock in MHz
+-e			Enable checking firmware version with default verification file 
+			"/sys/kernel/debug/sof/fw_version"
+-v ver_file		Enable checking firmware version with ver_file file, 
+			instead of default: "/sys/kernel/debug/sof/fw_version"
 -s			Take a snapshot of state
 
 
 Examples:
 
+- Get traces from "/sys/kernel/debug/sof/etrace" file, verifies fw_version with
+  "/sys/kernel/debug/sof/fw_version" and prints logs to stdout
+
+  $ sof-logger -l ldc_file -e
+
+- Get traces from "/sys/kernel/debug/sof/etrace" file, verifies fw_version with
+  ver_file file and prints logs to stdout
+
+  $ sof-logger -l ldc_file -v ver_file
+
 - Get traces from "/sys/kernel/debug/sof/etrace" file and prints logs to stdout
 
   $ sof-logger -l ldc_file

rmbox/convert.h

@@ -36,6 +36,9 @@ struct convert_config {
 	const char *ldc_file;
 	FILE* ldc_fd;
 	int input_std;
+	int version_fw;
+	char *version_file;
+	FILE *version_fd;
 #endif
 };
 

rmbox/logger_convert.c

@@ -19,7 +19,7 @@
 #include <errno.h>
 #include <unistd.h>
 #include <math.h>
-
+#include <sof/uapi/ipc.h>
 #include "convert.h"
 
 #define CEIL(a, b) ((a+b-1)/b)
@@ -32,15 +32,15 @@
 #define SND_SOF_LOGS_SIG_SIZE	4
 #define SND_SOF_LOGS_SIG	"Logs"
 
+/*
+* Logs dictionary file header.
+*/
 struct snd_sof_logs_header {
-	/* "Logs" */
-	unsigned char sig[SND_SOF_LOGS_SIG_SIZE];
-	/* address of log entries section */
-	uint32_t base_address;
-	/* amount of bytes following this header */
-	uint32_t data_length;
-	/* offset to first entry in this file */
-	uint32_t data_offset;
+	unsigned char sig[SND_SOF_LOGS_SIG_SIZE]; /* "Logs" */
+	uint32_t base_address;  /* address of log entries section */
+	uint32_t data_length;   /* amount of bytes following this header */
+	uint32_t data_offset;   /* offset to first entry in this file */
+	struct sof_ipc_fw_version version;
 };
 
 struct ldc_entry_header {
@@ -145,7 +145,7 @@ static void print_entry_params(FILE *out_fd, struct dma_log dma_log,
 			entry.params[2], entry.params[3]);
 		break;
 	}
-	fprintf(out_fd, "\n");
+	fprintf(out_fd, "%s\n", KNRM);
 	fflush(out_fd);
 }
 
@@ -319,5 +319,25 @@ int convert(struct convert_config *config) {
 		return -EINVAL;
 	}
 
+	/* fw verification */
+	if (config->version_fd) {
+		struct sof_ipc_fw_version ver;
+		int i;
+		/* here fw verification should be exploited */
+		count = fread(&ver, sizeof(ver), 1, config->version_fd);
+		if (!count) {
+			fprintf(stderr, "Error while reading %s. \n", config->version_file);
+			return -ferror(config->version_fd);
+		}
+
+		ret = memcmp(&ver, &snd.version, sizeof(struct sof_ipc_fw_version));
+		if (ret) {
+			fprintf(stderr, "Error: fw version in %s file "
+				"does not coincide with fw version in "
+				"%s file. \n", config->ldc_file, config->version_file);
+			return -EINVAL;
+		}
+	}
+
 	return logger_read(config, &snd);
-}
+}

rmbox/rmbox.c

@@ -43,6 +43,8 @@ static void usage(void)
 #ifdef LOGGER_FORMAT
 	fprintf(stdout, "%s:\t -l *.ldc_file\t\t*.ldc files generated by rimage\n", APP_NAME);
 	fprintf(stdout, "%s:\t -p \t\t\tInput from stdin\n", APP_NAME);
+	fprintf(stdout, "%s:\t -e \t\t\tEnable checking firmware version with default verification file\n", APP_NAME);
+	fprintf(stdout, "%s:\t -v ver_file\t\tEnable checking firmware version with ver_file file\n", APP_NAME);
 #endif
 	fprintf(stdout, "%s:\t -c\t\t\tSet timestamp clock in MHz\n", APP_NAME);
 	fprintf(stdout, "%s:\t -s\t\t\tTake a snapshot of state\n", APP_NAME);
@@ -123,11 +125,16 @@ int main(int argc, char *argv[])
 	config.in_fd = NULL;
 #ifdef LOGGER_FORMAT
 	config.ldc_file = NULL;
+	config.ldc_fd = NULL;
 	config.input_std = 0;
+	/* checking fw version is disabled by default */
+	config.version_file = NULL;
+	config.version_fd = NULL;
+	config.version_fw = 0;
 #endif
 
 #ifdef LOGGER_FORMAT
-	while ((opt = getopt(argc, argv, "ho:i:l:ps:m:c:t")) != -1) {
+	while ((opt = getopt(argc, argv, "ho:i:l:ps:m:c:tev:")) != -1) {
 #else
 	while ((opt = getopt(argc, argv, "ho:i:s:m:c:t")) != -1) {
 #endif
@@ -153,6 +160,18 @@ int main(int argc, char *argv[])
 		case 'p':
 			config.input_std = 1;
 			break;
+		case 'e':
+			/* enabling checking fw version with default verification 
+			 * file
+			 */
+			config.version_fw = 1;
+			config.version_file = "/sys/kernel/debug/sof/fw_version";
+			break;
+		case 'v':
+			/* enabling checking fw version with ver_file file */
+			config.version_fw = 1;
+			config.version_file = optarg;
+			break;
 #endif
 		case 'h':
 		default: /* '?' */
@@ -161,8 +180,9 @@ int main(int argc, char *argv[])
 	}
 
 #ifdef LOGGER_FORMAT
+	
 	if (!config.ldc_file) {
-		fprintf(stderr, "error: Missing ldc file");
+		fprintf(stderr, "error: Missing ldc file\n");
 		usage();
 	}
 
@@ -173,6 +193,16 @@ int main(int argc, char *argv[])
 		ret = -errno;
 		goto out;
 	}
+
+	if (config.version_fw) {
+		config.version_fd = fopen(config.version_file, "r");
+		if (!config.version_fd) {
+			fprintf(stderr, "error: Unable to open ver file %s\n",
+				config.version_file);
+			ret = -errno;
+			goto out;
+		}
+	}
 #endif
 
 	if (config.out_file) {
@@ -223,6 +253,8 @@ out:
 #ifdef LOGGER_FORMAT
 	if (config.ldc_fd)
 		fclose(config.ldc_fd);
+	if (config.version_fd)
+		fclose(config.version_fd);
 #endif
 
 	return ret;